Security readout for executives and security teams
Plain-English summary
CVE-2021-41752 is a stack overflow in JerryScript before commit e1ce7dd from October 20, 2021. In business terms, affected embedded or application code using that engine revision may be crashable. The public record does not provide severity, CVSS, named affected products, or confirmed active exploitation.
Executive priority
Treat as a targeted dependency hygiene issue unless JerryScript is used in exposed or safety-critical products. Prioritize inventory first because the public CVE data lacks severity and affected product mapping.
Technical view
The CVE describes an unbounded recursive call to the new opt() function in JerryScript before commit e1ce7dd7271288be8c0c8136eea9107df73a8ce2. The documented consequence is stack overflow. Impact details beyond stack exhaustion are not established in the supplied sources.
Likely exposure
Exposure is most likely in software that embeds or vendors JerryScript code from before the referenced October 20, 2021 commit. The source bundle does not identify downstream products, package versions, or CPEs.
Exploitation context
The source bundle lists a public GitHub issue and no CISA KEV entry. There is no provided evidence of active exploitation, exploit maturity, or widespread targeting.
Researcher notes
Key gaps are absent CVSS, CWE, affected versions, CPEs, and exploit evidence. Analysis should focus on commit provenance, downstream vendoring, and whether untrusted JavaScript reaches the affected engine in your environment.
Mitigation direction
- Identify any direct or vendored JerryScript use.
- Update to a revision containing commit e1ce7dd or later.
- Check JerryScript project guidance for release-specific fixes.
- Ask vendors whether embedded JerryScript is present in shipped products.
Validation and detection
- Inventory source trees and SBOMs for JerryScript references.
- Compare bundled JerryScript commit history against e1ce7dd.
- Review vendor advisories for affected product mapping.
- Confirm remediation through dependency or firmware build records.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-41752 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/jerryscript-project/jerryscript/issues/4779CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.